Answer:
12
Step-by-step explanation:
12×4=48
48 rounded to the nearest 10 is 50
The correct is 44 because you estamate and 48 is close to 44
Answer:
4. none of the above
Step-by-step explanation:
cos(x)=-1 is 180 where value x is.180
Answer:
Doesn't make sense.
Step-by-step explanation:
-1 ≤ cosθ ≤ 1
=> cosθ = 3√3 doesn't make sense.